I have a WPF DataGrid (.NET 4) with custom template columns and header styles and would like to be able to adjust the size of the columns :

<DataGridTemplateColumn.HeaderStyle>
    <Style TargetType="DataGridColumnHeader">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="DataGridColumnHeader">
                    <StackPanel Orientation="Horizontal">
                        <Image Source="Images\monitor.png" Width="16" Height="16"/>
                        <TextBlock Text="Hostname" TextWrapping="Wrap" Padding="3"/>
                    </StackPanel>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</DataGridTemplateColumn.HeaderStyle>

Columns can still be sorted and re-arranged but not resized - the gripper does not show. I have seen this answer and looked at the Thumb control, however this seems like massive overkill to reproduce functionality already provided. The MSDN blog post references a StaticResource - RowHeaderGripperStyle which they don't provide!

c# .net wpf datagrid
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